CVE-2019-12668
A vulnerability in the web framework code of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web interface of the affected software using the banner parameter. The vulnerability is due to insufficient input validation of the banner parameters that are passed to the web server of the affected software. An attacker could exploit this vulnerability by crafting a banner parameter and saving it. The attacker could then convince a user of the web interface to access a malicious link or could intercept a user request for the affected web interface and inject malicious code into the request. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected web interface or allow the attacker to access sensitive browser-based information.
Key facts
- CVSS score
- 4.8 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
- CWE-79
- EPSS score
- 0.8% (56th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2019-4259)
- Published
- September 25, 2019
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2019-4259 in the EU Vulnerability Database. Last updated in EUVD on November 21, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios xe
- cisco / ios xe
- cisco / ios xe
- cisco / ios xe
- cisco / ios xe
- cisco / ios xe
- cisco / ios xe
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Cisco Catalyst 9400 Series Switches running IOS-XE 16.6 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10863-2018 - archived
References
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain